package day03;

public class IfElseDemo {
    public static void main(String[] args) {
        //满500打八折，不满500打九折
        double price = 400.0; //带数(600,400)
        if (price>=500){
            price *= 0.8;
        }else {
            price *= 0.9;
        }
        System.out.println("最终金额为："+price);

        //判断成绩是否合法
        int score = -50; //(95,120)
        if (score>=0 && score<=100){
            System.out.println("成绩合法...");
        }else {
            System.out.println("成绩不合法...");
        }
    }
}
